About this manual
This manual contains service and reference information for the following ThinkPad
®
products.
ThinkPad E14
Machine types (MT) 20RA and 20RB
ThinkPad R14
Machine type (MT) 20RC
ThinkPad S3 Gen 2 Machine type (MT) 20RG
ThinkPad E15
Machine types (MT) 20RD and 20RE
Use this manual along with the advanced diagnostic tests to troubleshoot problems.
Important: This manual is intended only for trained service technicians who are familiar with ThinkPad
products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.
Before servicing a ThinkPad product, be sure to read all the information under Chapter 1 “Safety information”
on page 1 and Chapter 2 “Important service information” on page 21.
© Copyright Lenovo 2019 iii
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